LDS apologist argument #2: the 'Long Scroll Theory' — a different, longer, lost scroll within the same collection contained the real Book of Abraham source

A variant of the scroll theory holds that while the surviving fragments are from the Book of Breathings, there were additional scrolls in the same collection that were burned in the Great Chicago Fire. These lost scrolls, the argument goes, are what Smith actually used for the Book of Abraham. Mike acknowledges this is the more sophisticated version of the scroll argument.